I was in Walmart today and of course I cruised past the oil aisle. Looking at the new packaging for the Rotella Synthetic 5w40, I can't find the words "Heavy Duty" anywhere on the new bottle. The white bottle 15w40 conventional still says "Heavy Duty" but not the RTS. My old bottles of RTS bought last year (the old style bottle) have the words "Heavy Duty" on them.
I thought I understood that to put "Heavy Duty" on a bottle of oil, you had to put a stronger additive pack in it... but I'm not sure which ingredients it was. If "Heavy Duty" is missing, does that mean Shell has reduced it's add pack? What's it mean?
I thought I understood that to put "Heavy Duty" on a bottle of oil, you had to put a stronger additive pack in it... but I'm not sure which ingredients it was. If "Heavy Duty" is missing, does that mean Shell has reduced it's add pack? What's it mean?